在.net中Rijndael和TripleDES的比较

2008-9-15ganton
今天，我对使用Rijndael和TripleDES那一个算法有些疑惑，据我所知Rijndael比TripleDES要快些，但是在.net开发过程中有些信息让我知道在2.0中TripleDES却比Rijndael快，
为了证明其正确性，我将做一个测试。测试的结果是他们的效率基本一样。

我测试的电脑，内存2G,cpu酷睿双核E84003Ghz,.net3.5。下面是测试代码：
usingSystem;

usingSystem.IO;

usingSystem.Security.Cryptography;

usingSystem.Diagnostics;

namespaceAESvsTripleDES

{

classProgram

{

staticvoidMain(string[]args)

{

doublerijndaelResult;

doubletripleDesResult;

using(SymmetricAlgorithmalgorithm=Rijndael.Create())

{

rijndaelResult=RunTest(algorithm);

}

using(SymmetricAlgorithmalgorithm=TripleDES.Create())

{

tripleDesResult=RunTest(algorithm);

}

Console.WriteLine("RijndaelResult="+rijndaelResult.ToString());

Console.WriteLine("TripleDESResult="+tripleDesResult.ToString());

Console.Read();

}

privatestaticdoubleRunTest(SymmetricAlgorithmalgorithm)

{

using(MemoryStreamms=newMemoryStream())

{

using(ICryptoTransformtransform=algorithm.CreateEncryptor())

{

using(CryptoStreamcs=newCryptoStream(ms,transform,CryptoStreamMode.Write))

{

byte[]data=newbyte[8192];

Randomr=newRandom(255);

for(inti=0;i<data.Length;i++)

{

data[i]=(byte)r.Next();

}

Stopwatchsw=newStopwatch();

sw.Start();

for(inti=0;i<10000000;i+=data.Length)

{

cs.Write(data,0,data.Length);

}

sw.Stop();

returnsw.ElapsedMilliseconds;

}

}

}

}

}

}